JP2003233368A - Image display control device and method - Google Patents

Abstract

(57) [Summary] [Problem] To enlarge and display a predetermined portion of an image,
Further enlarged or reduced display of the image of the enlarged and displayed predetermined portion is freely performed. When an image is displayed on an LCD panel and a predetermined portion of the displayed image is instructed (touched) by a user, it is determined in S1 that an input has been made from the touch panel, and in S2, an input has been made from the touch panel. Coordinates, which are input positions, are detected from the key signal. In S3, the moving width of the image is calculated based on the detected coordinates. In S4 and S5, a predetermined portion of the image is moved to the center of the screen based on the calculated moving width.
It is displayed at a preset magnification. In S6,
If it is determined that a zoom input has been made, a zoom signal is detected in S7 and S8, a magnification is calculated based on the zoom signal, and an image is displayed at the calculated magnification in S9.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image display control apparatus and method, and more particularly to an image display control apparatus and method suitable for enlarging or reducing image data.

[0002]

2. Description of the Related Art In recent years, various functions are being installed in a digital video camera, and if operation keys of various functions are installed in the main body, not only the size cannot be reduced but also the appearance is unfavorable.

Therefore, as an alternative to various operation keys, an LCD (Liquid
Crystal Digital) also functions as a touch panel,
There are also models that are equipped with various functions by mounting (displaying) various operation buttons that can be operated (touched) by the user.

[0004]

In the above-mentioned model for performing various operations on the touch panel, for example, when a predetermined portion of the image displayed on the LCD is enlarged and displayed, the original image size is reduced. It was possible to magnify the display only by fixing it twice.

Therefore, even if the user wants to further enlarge or reduce the display of a predetermined portion of the image, there is no means for realizing it.

The present invention has been made in view of such circumstances, and performs a magnified display of a predetermined portion of an image desired by the user, and further magnifies or reduces the magnified display of the image of the predetermined portion. Is also something that can be done freely.

[0007]

An image display control device of the present invention is provided with a first display control means for controlling display of an image on a display screen and an image whose display is controlled by the first display control means. For determining whether or not a predetermined portion of the
When it is determined by the determining means and the first determining means that the predetermined portion of the image has been designated, the predetermined portion of the image is located substantially in the center of the display screen and is displayed at a preset magnification. A second display control means for controlling, and determining whether or not an enlarged display or a reduced display is instructed in a state where image display is controlled by the first display control means or the second display control means. The second determination means and the third display control means for controlling the image to be displayed at a predetermined magnification when it is determined by the second determination means that the enlarged display or the reduced display is instructed. And

The first determining means can determine whether or not a predetermined portion on the display screen is pressed by the user.

When it is determined by the first determining means that the predetermined portion of the image is designated, a detecting means for detecting the coordinates of the predetermined portion on the display screen can be further provided.

Operation means for enlarging or reducing the image can be further provided, and the second judging means includes:
It is possible to determine whether or not an enlarged display or a reduced display of the image is instructed by the operation means.

The third display control means can be controlled to display an image at a predetermined magnification in synchronization with the operation of the operation means.

The display screen may be a touch panel.

According to the image display control method of the present invention, the first display control step for controlling the display of the image on the display screen and the predetermined portion of the image whose display is controlled by the processing of the first display control step are performed. When it is determined that the predetermined portion of the image is designated by the first determination step of determining whether or not it has been designated, and the processing of the first determination step, the predetermined portion of the image is located substantially in the center of the display screen, In addition, the second display control step of controlling to display at a preset magnification and the image display is controlled by the processing of the first display control step or the second display control step If it is determined by the second determination step that determines whether the display or the reduced display is instructed and the process of the second determination step determines that the enlarged display or the reduced display is instructed, the image is displayed. Characterized in that it comprises a third display control step for controlling to display at magnification.

In the image display control apparatus and method according to the present invention, when an image is displayed on the display screen and a predetermined portion of the display image is designated, the predetermined portion of the image is located at substantially the center of the display screen, and , Are controlled to be displayed at a preset magnification. When an enlarged display or a reduced display is instructed while the image is displayed, the display image is controlled to be displayed at a predetermined magnification.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a camera integrated type to which the present invention is applied.
It is a block diagram which shows the structural example of DVTR (digital video tape recorder). When the zoom lever 1 is operated by the user, the zoom lever 1 outputs a key signal corresponding to the operation to the microprocessor 4. Although not shown, DVTR
In addition to the zoom lever 1, an input unit including buttons, switches and the like is provided on the main body of the unit as needed.

The LCD panel 2 reproduces (displays) video data (moving image and still image) input via the switches 14 and 15, and also inputs via the on-screen display circuit 5 and the switch 15. The image data corresponding to the text information or the like is reproduced (displayed).

On the LCD panel 2, touch panels are arranged in a stack, on which various operation buttons are displayed,
A predetermined operation button is pressed (touched) by the user. When the LCD panel 2 is operated, the touch panel control section 3 receives data corresponding to the operation (for example, indicating touched coordinates) from the LCD panel 2 and outputs a key signal corresponding to the received data to the microprocessor 4 Output to.

That is, the user can use the LCD panel 2 as a viewfinder or as an operation panel.

The microprocessor 4 includes the zoom lever 1
Corresponding to the key signal (zoom signal) input from the touch panel or the key signal input from the touch panel control unit 3, various control signals are generated and supplied to each unit to control the respective operations. The microprocessor 4 also calculates the enlargement ratio or reduction ratio of the video data in response to the key signal input from the input unit 1 or the touch panel control unit 3, or the video data at the calculated enlargement ratio or reduction ratio. A control signal for performing reproduction (display) is supplied to the reproduction circuit 13 to control the reproduction process.

The on-screen display circuit 5 converts the text information into corresponding image data based on the control signal supplied from the microprocessor 4, and the terminal b of the switch 10 or the terminal b of the switch 15.
Supply to.

The focus motor 6 is driven based on a control signal supplied from the microprocessor 4 so that the imager 8 captures an image displayed on an optical lens 7 including an imaging lens. The imager 8 is composed of, for example, a CCD (Charge Coupled Device) or the like, and converts image light from a subject incident through the optical lens 7 into imager signals (imaging signals) of a red signal R, a green signal G, and a blue signal B. And supplies it to the camera signal processing circuit 9.

The camera signal processing circuit 9 responds to the imager signal supplied from the imager 8 based on the control signal supplied from the microprocessor 4 and the zoom signal supplied from another macro processor (not shown). Camera signal processing such as A / D (Analog to Digital) conversion processing, contour enhancement processing, matrix processing, or gamma processing is performed to generate video (image) data, and switch 1
0 to terminal a.

The switch 10 is switched to select the terminal a when the video data from the camera signal processing circuit 9 is output to the recording circuit 11 based on the control signal supplied from the microprocessor 4, and the on-screen is selected. When the image data corresponding to the text information from the display circuit 5 is output to the recording circuit 11, the terminal b can be switched to be selected.

Based on the control signal supplied from the microprocessor 4, the recording circuit 11 determines a predetermined value for the video data supplied from the camera signal processing circuit 9 or the image data supplied from the on-screen display circuit 5. Method (for example, MPEG (Moving Picture Exp
erts group) method), and further performs recording signal processing such as error correction processing and modulation processing,
The data is recorded on the recording medium 12. The recording medium 12 is, for example, a digital video tape.

The reproducing circuit 13 is based on the control signal supplied from the microprocessor 4 and is based on the recording medium 1
The video data recorded in 2 is read out, demodulation processing,
Predetermined reproduction signal processing such as error correction processing, decoding processing, and D / A conversion processing is performed to generate a video signal, which is output to the LCD panel 2 via the terminal b of the switch 14 and the terminal a of the switch 15. . The reproducing circuit 13 also, based on the control signal supplied from the microprocessor 4,
The video data read out from the recording medium 12 is enlarged or reduced, and the terminal b of the switch 14 and the switch 1 are displayed.
Output to the LCD panel 2 via the terminal a of 5.

The switch 14 receives the image data from the camera signal processing circuit 9 through the switch 15 based on the control signal supplied from the microprocessor 4,
When outputting to the D panel 2, it is switched to select the terminal a, and when outputting the video data from the reproducing circuit 13 to the LCD panel 2 via the switch 15, it is switched to select the terminal b.

The switch 15 is an on-screen display circuit 5 controlled by the microprocessor 4.
When the video data from the camera signal processing circuit 9 is output to the LCD panel 2 on the basis of the command from, the terminal a is switched to select the image data corresponding to the text information from the on-screen display circuit 5. LCD
When outputting to the panel 2, it is switched to select the terminal b.

Next, the basic operation of the DVTR shown in FIG. 1 will be described.

At the time of recording, the imager 8 picks up the image displayed by the optical lens 7 and supplies the imager signal to the camera signal processing circuit 9. Camera signal processing circuit 9
Performs camera signal processing on the imager signal supplied from the imager 8 and supplies video (image) data to the recording circuit 11 via the terminal a of the switch 10.
The recording circuit 11 performs predetermined recording signal processing on the video data from the camera signal processing circuit 9, and the recording medium 12
To record.

At the time of reproduction, the reproduction circuit 13 reads out the video (image) data recorded on the recording medium 12, performs a predetermined reproduction signal processing, and outputs the data through the terminal b of the switch 14 and the terminal a of the switch 15 to the LCD. Output to panel 2 and play (display) video.

When the user who refers to the video (image) displayed on the LCD panel 2 wants to enlarge and display a predetermined portion, he touches a desired position on the LCD panel 2 and enlarges the display around that position. Can be made. Further, the zoom lever 1 can be operated to display an image in which a predetermined portion is enlarged at an arbitrary enlargement ratio or reduction ratio.

Next, referring to the display screens of FIGS. 2 to 6, the enlarged display processing of the predetermined portion of the image desired by the user will be described below. It should be noted that the image data is already recorded on the recording medium 12, and when the user gives an instruction to reproduce the image data, the reproducing circuit 13 controls the image data from the recording medium 12 under the control of the microprocessor 4. Is read out and output to the LCD panel 2 via the terminal b of the switch 14 and the terminal a of the switch 15 for reproduction (display).

FIG. 2 shows the LCD when the user gives an instruction to display the image data recorded on the recording medium 12.
It is a figure which shows the example of a display of the panel 2. LCD panel 2 has
An image 31 corresponding to the image data read from the recording medium 12 is displayed on the entire screen. Information such as the remaining battery level is displayed as an icon on the upper side of the display screen, and the user can select (touch) on the lower side of the display screen.
A "-" button, a "+" button, a "camera" button, an "index" button, and a "function" button 32 are displayed.

In the display screen shown in FIG. 2, the user selects the LCD
By selecting each button displayed on the panel 2, various processes (for example, display of the previous page image and display of the next page image) can be executed. For example, if the user selects the "function" button 32,
The display screen is switched to that shown in FIG.

On the upper side of the display screen shown in FIG. 3, the image number ("100-0001" (DCF which is the standard of the image file) is displayed.
(Design rule for Camera File system) standard 100 folder 0001th file image), the currently displayed (active) page number (in this case, page 2), and the display screen of FIG. "Close" button 42 selected (touched) by the user when returning to
Is displayed, and a "playback zoom" button 41, a "camera" button, an "index" button, and a "data code" button that can be selected (touched) by the user are displayed on the lower side of the display screen. .

In the display screen shown in FIG. 3, the user selects the LCD
By selecting each button displayed on the panel 2, various processes (for example, reproduction zoom) can be executed. For example, when the user selects the "playback zoom" button 41, the display screen is switched to that shown in FIG.

At the upper left side of the display screen shown in FIG.
The function name is displayed as an icon 51 to indicate that the "playback zoom" function is being executed, and the lower right side of the display screen is selected by the user when returning to the display screen of FIG. 3 ( The "end" button 52 to be touched is displayed.

On the display screen shown in FIG. 4, the user designates (touches) a predetermined portion of the image 31 to be enlarged, and a preset magnification (for example, 2 times) is centered on the portion. ) Can be enlarged and displayed. For example, when the user touches a desired position 53 (image portion of “cat”) in the image 31, the display screen is switched to that shown in FIG.

On the display screen shown in FIG. 5, a predetermined portion of the image 31 designated by the user (image portion of "cat") is enlarged and displayed. Further, below the icon 51 displayed on the display screen, an icon 61 indicating the current enlargement ratio (2.0 times in this case) is displayed.

On the display screen of FIG. 5, the user can operate the zoom lever 1 to enlarge or reduce the image 31. Here, the operating method of the zoom lever 1 is not particularly limited, but, for example, when the zoom lever 1 is slid in the direction indicated by W (wide), the display is gradually enlarged, and the zoom is performed in the direction indicated by T (tele). When the lever 1 is slid, the display is gradually reduced, and the zoom speed can be made variable according to the amount of slide.

For example, when the user slides the zoom lever 1 in the W direction on the display screen shown in FIG. 5, the display screen changes to that shown in FIG. That is, the image 31 is gradually enlarged and displayed according to the sliding operation of the zoom lever 1.

On the display screen shown in FIG. 6, a predetermined portion of the image 31 designated by the user (image portion of "cat") is further enlarged and displayed. Further, although the icon 61 is displayed as "2.0" on the display screen of FIG. 4, the icon 61 is displayed as "5.
It is displayed as "0". That is, since the icon 61 is configured to display the current enlargement ratio, when the enlargement display or the reduction display operation is performed using the zoom lever 1, a new enlargement ratio is calculated and the calculated enlargement ratio is set. Will be updated.

As described above, the user can enlarge and display a predetermined portion of the image at a preset magnification (hereinafter, appropriately referred to as a prescribed magnification) by using the reproduction zoom function. Further, when the user wants to change a predetermined portion of the image enlarged and displayed at the specified magnification to an arbitrary magnification, the user can use the zoom lever 1 to enlarge or reduce the magnification to a desired magnification. Therefore, the user can display the image of the predetermined portion at a magnification of his or her preference. Further, in the case of a moving image, it is possible to perform an operation such as zooming a predetermined portion while reproducing.

In the above example, the specified magnification is two times, but this is merely an example.

Next, referring to the flowchart of FIG.
The reproduction zoom process executed by the microprocessor 4 will be described. At the start of this process, the user gives an instruction to reproduce the image data recorded on the recording medium 12, and the “function” button 32 shown in FIG. 2 displayed in response to the reproduction instruction is selected. It is assumed that the “playback zoom” button 41 of FIG. 3 displayed in accordance with is selected and the display screen shown in FIG. 4 is displayed on the LCD panel 2.

In step S1, the microprocessor 4 determines whether or not there is an input from the touch panel. Specifically, the user operates (touches) the LCD panel 2, data corresponding to the operation is received by the touch panel control unit 3, and it is determined whether or not a key signal corresponding to the received data is input. .

If it is determined in step S1 that there is an input from the touch panel, the process proceeds to step S2,
From the input key signal, the microprocessor 4
The x and y coordinates which are the input positions on the D panel 2 are detected.

In step S3, the microprocessor 4 calculates the movement width of the image based on the x coordinate and the y coordinate detected in the process of step S2. In particular,
The position 53 of the image 31 designated by the user (FIG. 4)
Coordinates (x, y) are the center coordinates (xm, y) of the LCD panel 2.
m), the movement widths Δx and Δy are calculated according to the following equation (1). Moving width in x direction Δx = xm-xy Moving width in y direction Δy = ym-y (1)

In step S4, the microprocessor 4 generates a control signal for moving the image 31 based on the movement width calculated in the process of step S3 and supplies the control signal to the reproducing circuit 3 to control the reproducing process. To do. As a result, in the case of the example in FIG. 4, the entire image 31 is moved rightward in the figure so that the position 53 is located at the center of the screen.

The coordinates of the position 53 of the image 31 are displayed on the LCD.
After being moved to the center coordinates of the panel 2, in step S5, the microprocessor 4 enlarges the image at a preset magnification (for example, 2 times) while keeping the position 53 fixed at the center of the screen. A control signal for displaying is generated and supplied to the reproducing circuit 3 to control the reproducing process. As a result, the display screen is switched to that shown in FIG.

Note that the steps S4 and S5 are shown separately for the sake of clarity, but in reality, they are processed almost at the same time, and the image 31 is moved and enlarged and displayed.

If it is determined in step S1 that there is no input from the LCD panel 2, steps S2 to S
The process of 5 is skipped, and the process proceeds to step S6.

In step S6, the microprocessor 4 determines whether or not there is a zoom input. Specifically, it is determined whether the user operates the zoom lever 1 and receives a key signal corresponding to the operation.

When it is determined in step S6 that the zoom input has been made, the process proceeds to step S7, and the microprocessor 4 determines the zoom signal (enlargement or reduction, slide amount, etc.) from the input key signal. ) Is detected. In step S8, the microprocessor 4 calculates the magnification based on the zoom signal detected in the process of step S7. For example, if the zoom lever 1 is W
When it is slid in the direction, the enlargement ratio is calculated according to the sliding amount, and when it is slid in the T direction, the reduction ratio is calculated according to the sliding amount.

In step S9, the microprocessor 4 generates a control signal for displaying the image at the magnification calculated in the process of step S8 and supplies the control signal to the reproducing circuit 3 to control the reproducing process. For example, in the display screen of FIG. 5, when the zoom lever 1 is slid in the W direction, the image 31 is gradually enlarged according to the sliding operation, and the display screen shown in FIG. 6 is displayed.

In step S10, the microprocessor 4 determines whether or not the reproduction end of the image is instructed by the user, and if it is determined that the reproduction end is not instructed, the process returns to step S1 and the above-described processing is repeated. Run. Then, if it is determined in step S10 that the user has instructed to end the reproduction of the image, the process ends.

As described above, the microprocessor 4 is
A predetermined portion of the image (for example, the position 53 in FIG. 4) designated by the user using the LCD panel 2 is displayed as a magnified display at a specified magnification, and the zoom lever 1 is used to enlarge the image at an arbitrary magnification designated by the user. Can be displayed with. Therefore, the user can display the predetermined portion of the image at a magnification with a degree of freedom.

In the above, an example in which the present invention is applied to a camera-integrated DVTR has been described, but the present invention is not limited to this, and a touch panel such as the LCD panel 2 is provided.
It can be widely applied to a digital still camera or other various electronic devices.

[0060]

According to the present invention, it is possible to easily perform enlarged display or reduced display of an image.

According to the present invention, the user desires,
The predetermined portion of the image can be enlarged and displayed, and the enlarged image of the predetermined portion can be further enlarged or reduced.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration example of a camera-integrated DVTR to which the present invention is applied.

FIG. 2 is a diagram showing an example of a display screen of an LCD panel.

FIG. 3 is a diagram showing an example of a display screen displayed when a “function” button is selected on the display screen of FIG.

FIG. 4 is a diagram showing an example of a display screen displayed when a “playback zoom” button is selected on the display screen shown in FIG. 3;

5 is a diagram showing an example of a display screen displayed when a predetermined position is designated on the display screen of FIG.

6 is a diagram showing an example of a display screen displayed when the zoom lever is operated on the display screen of FIG.

FIG. 7 is a flowchart illustrating a reproduction zoom process.

[Explanation of symbols]

1 zoom lever, 2 LCD panel, 3 touch panel controller, 4 microprocessor, 5 on-screen display circuit, 6 focus motor,
7 optical lens, 8 imager, 9 camera signal processing circuit, 11 recording circuit, 12 recording medium, 1
3 playback circuit

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) H04N 5/228 H04N 5/262 5/262 G09G 5/36 520E F term (reference) 5C022 AA11 AB36 AC13 AC42 AC69 5C023 AA02 AA37 AA38 CA01 5C082 AA24 AA27 AA37 CA32 MM05 MM09 5E501 AA20 AC15 BA03 CA04 CB05 EA13 EB06 FA14 FB04 FB12 FB43

Claims (7)

[Claims] 1. A first control for displaying an image on a display screen
Display control means, a first determination means for determining whether or not a predetermined portion of the image whose display is controlled by the first display control means is designated, and the image by the first determination means. When it is determined that the predetermined part of the image is designated, the predetermined part of the image is located substantially in the center of the display screen, and second display control means for controlling to display at a preset magnification, Second determination means for determining whether or not an enlarged display or a reduced display is instructed while the display of the image is controlled by the first display control means or the second display control means; An image display, comprising: a third display control unit that controls the image to be displayed at a predetermined magnification when it is determined by the second determination unit that the enlarged display or the reduced display is instructed. Control Apparatus. 2. The image display control device according to claim 1, wherein the first determination unit determines whether or not the predetermined portion on the display screen is pressed by a user. 3. The method according to claim 1, further comprising detection means for detecting coordinates of the predetermined portion on the display screen when the first determination means determines that the predetermined portion of the image is designated. 1. The image display control device according to 1. 4. An operation means for performing enlarged display or reduced display of the image is further provided, and the second determination means determines whether or not the enlarged display or reduced display of the image is instructed by the operating means. The image display control device according to claim 1, wherein: 5. The image display control according to claim 4, wherein the third display control means controls the image to be displayed at a predetermined magnification in synchronization with the operation of the operation means. apparatus. 6. The image display control device according to claim 1, wherein the display screen is a touch panel. 7. A first control for displaying an image on a display screen
Of the display control step, a first determination step of determining whether or not a predetermined portion of the image whose display is controlled by the processing of the first display control step is designated, and a first determination step of When it is determined by the processing that the predetermined portion of the image has been designated, the second display which is controlled so that the predetermined portion of the image is located substantially in the center of the display screen and is displayed at a preset magnification. A control step; and a second step of determining whether or not an enlarged display or a reduced display is instructed while the display of the image is controlled by the processing of the first display control step or the second display control step. When it is determined that the enlarged display or the reduced display is instructed by the processing of the determination step and the second determination step, the image is controlled to be displayed at a predetermined magnification. And a third display control step for controlling the image display control method.